CN104592870B - Preparation process of impregnating varnish with high storage stability for transformer - Google Patents
Preparation process of impregnating varnish with high storage stability for transformer Download PDFInfo
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- CN104592870B CN104592870B CN201510062017.4A CN201510062017A CN104592870B CN 104592870 B CN104592870 B CN 104592870B CN 201510062017 A CN201510062017 A CN 201510062017A CN 104592870 B CN104592870 B CN 104592870B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Insulating Of Coils (AREA)
- Organic Insulating Materials (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention provides a preparation process of an impregnating varnish high storage stability for a transformer. The preparation process comprises the following steps: a, mixing 100 parts by weight of unsaturated polyester, 25-30 parts by weight of silicon resin, 1-1.5 parts by weight of benzoic acid, and 0.5-0.8 part by weight of benzoyl peroxide in a reactor, heating to the range of 150-160 DEG C and stirring for 1-2 hours to obtain a mixture A; b, adding 1-1.5 parts by weight of flatting agent and 9-11 parts by weight of active diluent to the mixture A, heating to the range of 180-190 DEG C and stirring for 1-2 hours to obtain a mixture B; c, adding 10-12 parts by weight of curing agent and 5-8 parts of N, N-dimethylaniline to the mixture B, stirring for 2-3 parts and cooling, thereby obtaining the impregnating varnish. Compared with the common polyimide impregnating varnish for the transformer in the prior art, the impregnating varnish prepared by use of the process has the advantages that the gelation time is shortened by 60%, the curing rate is effectively increased, the baking efficiency is effectively improved, the consumption of energy is reduced, the storage stability of the impregnating varnish is remarkably improved, and the like.
Description
Technical field
The present invention relates to impregnating varnish technical field, particularly relate to a kind of transformator high-storage stability and soak
The preparation technology of stain paint.
Background technology
Along with the demand to electric power that quickly grows of Chinese national economy rises, the most increasingly as power transmission and transformation
Capital equipment transformator in system have also been obtained significant progress.At home, for adapting to and meeting city
Field demand, many manufacturing firms continuously improve product structure, enhance product performance, and introduce from external
Advanced technology & equipment, has done unremitting effort in terms of the exploration of new technology new material, with
This improves constantly the q&r of product, has been obtained for significant progress.Wherein, impact
The factor of power transformer product performance is a lot, the material of such as iron core, the mode of winding winding and insulation material
The performance etc. of material.The impregnating varnish of one of the insulant as transformator, has transformer performance
Vital impact.Impregnating varnish is used for impregnating electric apparatus coil and parts, fills in insulation system
Gap and micropore, form the paint film of continuous formation, and make coil be bonded to one on impregnated thing surface
Solid entirety.Impregnating varnish divides solvent impregnating varnish and the big class of solvent-free immersion paint two, relatively has solvent
For impregnating varnish, solvent-free immersion paint mainly has following advantage: filling rate is high, insulating barrier air-gap-free,
Paint film is smooth solid；Solidification fugitive constituent is low, and environmental pollution is little, and process conditions are good；It is easy to automatization
Impregnation technology.Although the kind of solvent-free insulated impregnating varnish is a lot, but still can not meet and day by day improve
The requirement of transformer insulated performance.At present, the equipment such as transformator, electrical equipment and electrical is all towards environmental protection
Energy-conservation direction is developed, and then requires that impregnating varnish also develops towards environmental protection and energy saving direction, therefore to impregnating varnish
Gel and propose the highest requirement hardening time.
Summary of the invention
Brief overview about the present invention given below, in order to some side about the present invention is provided
The basic comprehension in face.Should be appreciated that this general introduction is not that the exhaustive about the present invention is summarized.It
It is not intended to determine the key of the present invention or pith, is not the model of the intended limitation present invention
Enclose.Its purpose is only to provide some concept in simplified form, more detailed in this, as discuss after a while
The thin preamble described.
It is an object of the invention to provide the preparation work of a kind of transformator high-storage stability impregnating varnish
Skill.
The present invention provides the preparation technology of a kind of transformator high-storage stability impregnating varnish, impregnates enamel-cover
Include each component of following parts by weight: unsaturated polyester (UP) 100 parts, silicones 25-30 part, benzoic acid
1-1.5 part, benzoyl peroxide 0.5-0.8 part, DMA 5-8 part, levelling agent 1-1.5
Part, firming agent 10-12 part, reactive diluent 9-11 part, unsaturated polyester (UP) includes parts by weight ratio
Relation is the maleic anhydride of 4:3:2:1, propylene glycol, polyprotic acid and diallyl phthalate；
Technique comprises the following steps: step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 25-30
Part, benzoic acid 1-1.5 part, benzoyl peroxide 0.5-0.8 part is put in reactor and is mixed, so
Post-heating, to 150-160 degree Celsius, stirs 1-2 hour, obtains mixture A；Step b, to mixing
Thing A adds levelling agent 1-1.5 part and reactive diluent 9-11 part of weight portion, is then heated to
180-190 degree Celsius, stir 1-2 hour, obtain mixture B；Step c, put in mixture B
Enter firming agent 10-12 part and DMA 5-8 part of weight portion, stir 2-3 hour,
Obtain transformator high-storage stability impregnating varnish after cooling.
Compared with polyimides impregnating varnish conventional on transformator in conventional art, the present invention prepares
Transformator high-storage stability impregnating varnish has the advantage that
1, shortening the gel time of 60%, solidification rate is effectively improved, and effectively carries
High baking efficiency, decreases the consumption of the energy；
2, the stability of the storage of impregnating varnish is significantly increased.
Detailed description of the invention
Embodiment 1
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 25 parts, 1 part of benzoic acid, benzoyl peroxide
Formyl 0.5 part, DMA 5 parts, levelling agent 1 part, 10 parts of firming agent, activity is dilute
Release agent 9 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is PSI, and firming agent is nitrogenous phenol
Urea formaldehyde, reactive diluent is styrene.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 25 parts, 1 part of benzoic acid,
Benzoyl peroxide 0.5 part mixes, and is then heated to 150 degrees Celsius, stirs 1-2 hour,
Obtain mixture 1；
Step b, the levelling agent 1 part putting into weight portion in mixture 1 and reactive diluent 9 parts,
It is then heated to 180 degrees Celsius, stirs 1-2 hour, obtain mixture 2；
Step c, the DMA 5 parts putting into weight portion to mixture 2 and firming agent 10
Part, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
The gel time of impregnating varnish is the symbol to impregnating varnish reactivity, generally gel time
The shortest, the reactivity of impregnating varnish is the biggest, can shorten cure cycle further, thus reduce energy consumption,
Reach energy-conservation beneficial effect.But when shortening gel time, the reactivity of impregnating varnish can be rapidly
Become big, the bin stability of impregnating varnish can be caused to reduce, therefore while shortening impregnating varnish hardening time,
The stability of impregnating varnish storage to be also guaranteed.
What the transformator high-storage stability impregnating varnish provided by further illustrating the present invention was brought has
Benefit effect, the present inventor selects polyimides impregnating varnish and the present invention that in conventional art, transformator is conventional
The transformator high-storage stability impregnating varnish provided contrasts.Wherein, the stability of impregnating varnish is used
The number of Δ represents, number shows that stability is the strongest the most at most.
As shown in Table 1, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time and stability are tested, and the result obtained is conventional in 16 hours, with conventional art
Polyimides impregnating varnish compare, shorten the gel time of 20%, solidification rate has obtained effectively
Ground improves, and is effectively improved baking efficiency, decreases the consumption of the energy.Meanwhile, transformator height storage
The bin stability depositing stability impregnating varnish is guaranteed, and meets the requirement of storage, has and expects not
The effect arrived.
Table 1
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 16h |
| Bin stability | ΔΔΔ | ΔΔΔΔ |
Embodiment 2
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 28 parts, 1.4 parts of benzoic acid, peroxidating
Benzoyl 0.7 part, DMA 7 parts, levelling agent 1.5 parts, 11 parts of firming agent, live
Property diluent 10.5 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is that acrylic resin and PSI are by weight
Amount ratio mixes for 1:1, and firming agent is Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine is by weight
2:1 mixes, and reactive diluent is that styrene and phenyl glycidyl ether mix by weight for 1:3
Conjunction forms.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 28 parts, 1.4 parts of benzoic acid,
Benzoyl peroxide 0.7 part is put in reactor and is mixed, and is then heated to 155 degrees Celsius, stirs
Mix 1-2 hour, obtain mixture 3；
Step b, the levelling agent 1.5 parts putting into weight portion to mixture 3 and reactive diluent 10.5 parts,
It is then heated to 185 degrees Celsius, stirs 1-2 hour, obtain mixture 4；
Step c, the DMA 7 parts putting into weight portion in mixture 4 and firming agent
11 parts, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 2, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 45%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish has been improved, and preferably meets the requirement of storage, has and expects not
The effect arrived.
Table 2
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 11h |
| Bin stability | ΔΔΔ | ΔΔΔΔΔ |
Embodiment 3
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 28 parts, 1.4 parts of benzoic acid, peroxidating
Benzoyl 0.7 part, DMA 6 parts, levelling agent 1.5 parts, 11 parts of firming agent, live
Property diluent 10.5 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is that acrylic resin and PSI are by weight
Amount ratio mixes for 1:1, and firming agent is Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine is by weight
2:1 mixes, and reactive diluent is that styrene and phenyl glycidyl ether mix by weight for 1:3
Conjunction forms.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 28 parts, 1.4 parts of benzoic acid,
Benzoyl peroxide 0.7 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Obtain mixture 5；
Step b, the levelling agent 1.5 parts putting into weight portion in mixture 5 and reactive diluent 10.5
Part, it is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 6；
Step c, the DMA 6 parts putting into weight portion to mixture 6 and firming agent 11
Part, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 3, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 60%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish has had and has improved significantly, and tool has an unexpected effect.
Table 3
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 8h |
| Bin stability | ΔΔΔ | ΔΔΔΔΔΔ |
Analyzing its reason, inventor thinks that this and the transformator high-storage stability of preparing chosen impregnate
The components such as the reactive diluent of paint are relevant with corresponding content.
With the material of epoxy-functional in the molecular structure of reactive diluent, this material directly participates in
Curing reaction time prepared by impregnating varnish, maintains the performance of cured product, can also reduce dipping simultaneously
The viscosity of paint.Through the substantial amounts of experiment of inventor and research, reactive diluent is styrene and phenyl glycidyl
Glycerin ether is by weight mixing for 1:3, and this compound reactive diluent can occur synergism,
Curing reaction speed is increased, is significantly reduced hardening time.
Levelling agent uses acrylic resin and PSI to mix for 1:1 by weight,
Firming agent be Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine by weight mixing for 2:1, accelerator is
DMA, these components together with other components with the use of, the leaching finally prepared
The performance of stain paint is promoted significantly.
Visible, the selection of component and content all right and wrong in the present invention are it will be apparent that these components just
With the selection of content, there is mutually synergism, the most just can make the high storage of transformator of preparation
Stability impregnating varnish has the performance of excellence, meets the demand of practice.
Embodiment 4
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 30 parts, 1.5 parts of benzoic acid, peroxidating
Benzoyl 0.8 part, DMA 8 parts, levelling agent 1.5 parts, 12 parts of firming agent, live
Property diluent 11 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is acrylic resin, and firming agent is Nitrogen-containing Phenolic Resins,
Reactive diluent is that styrene and phenyl glycidyl ether are by weight mixing for 1:1.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 30 parts, 1.5 parts of benzoic acid,
Benzoyl peroxide 0.8 part mixes, and is then heated to 160 degrees Celsius, stirs 1-2 hour,
Obtain mixture 7；
Step b, the levelling agent 1.5 parts putting into weight portion to mixture 7 and reactive diluent 11 parts,
It is then heated to 190 degrees Celsius, stirs 1-2 hour, obtain mixture 8；
Step c, the DMA 8 parts putting into weight portion to mixture 8 and firming agent 12
Part, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 5, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 8 hours, and conventional with transformator in conventional art is poly-
Acid imide impregnating varnish is compared, and shortens the gel time of 40%, and solidification rate has obtained effectively carrying
Height, is effectively improved baking efficiency, decreases the consumption of the energy.Transformator is stable with height storage simultaneously
Property impregnating varnish bin stability be guaranteed, meet storage requirement, there is beyond thought effect
Really.
Table 4
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 12h |
| Bin stability | ΔΔΔ | ΔΔΔΔ |
According to above-mentioned test value, in example 4, when using following preparation technology:
Step a, take each component of following parts by weight: unsaturated polyester (UP) 100 parts, silicones 28 parts,
1.4 parts of benzoic acid, benzoyl peroxide 0.7 part, DMA 6 parts, levelling agent 1.5 parts,
11 parts of firming agent, reactive diluent 10.5 parts；Step b, the unsaturated polyester (UP) 100 parts put in step a,
Silicones 28 parts, 1.4 parts of benzoic acid, benzoyl peroxide 0.7 part mixes, and is then heated to 158
Degree Celsius, stir 1-2 hour；Step c, the levelling agent 1.5 parts put in step a and reactive diluent
10.5 parts, it is then heated to 188 degrees Celsius, stirs 1-2 hour；Step d, put into N, N-dimethyl
Aniline 6 parts and 11 parts of firming agent, stir 2-3 hour, obtain transformator high-storage stability after cooling
Impregnating varnish, transformator high-storage stability impregnating varnish is better than other at gel time and bin stability
Embodiment.Analyze its reason, inventors have surprisingly discovered that, when the temperature in preparation carries out special selection
This beyond thought technique effect could be realized.In the present embodiment, specific temperature selects to make
The molecule contacts of each component is more abundant, and curing reaction speed increases, it is possible to when shortening gel admirably
Between, the most intermolecular combination is more rapid, and the transformator of formation high-storage stability impregnating varnish has
There is preferable bin stability.
Visible, the selection of component and content all right and wrong in the present invention are it will be apparent that these components just
With the selection of content, there is mutually synergism, in conjunction with specific processing method, formed one complete
Whole technical system, the most just can make the transformator high-storage stability impregnating varnish of preparation have excellent
Different performance, meets the demand of practice；Therefore, the technical scheme is that non-obvious.
Meanwhile, those skilled in the art know, and in the present invention, levelling agent is acrylic resin, urea aldehyde
One or several mixing in resin, polydimethylsiloxane and PSI；But it is existing
Have remaining levelling agent in technology can also be suitable for the solution of the present invention, protection scope of the present invention it
In.
Meanwhile, those skilled in the art know, and in the present invention, firming agent is Nitrogen-containing Phenolic Resins, virtue
One or several mixing in ether-ether diaryl-amine；But remaining firming agent can also be fitted in prior art
By the solution of the present invention, within protection scope of the present invention.
Meanwhile, those skilled in the art know, and in the present invention, reactive diluent is styrene, diformazan
Benzene, one or several mixing in phenyl glycidyl ether；But remaining activity is dilute in prior art
Release agent and can also be suitable for the solution of the present invention, within protection scope of the present invention.
Last it is noted that above example is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to previous embodiment, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be repaiied by it
Change, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, not
The essence making appropriate technical solution departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. the transformator preparation technology of high-storage stability impregnating varnish, it is characterised in that
Described impregnating varnish includes each component of following parts by weight: unsaturated polyester (UP) 100 parts,
Silicones 25-30 part, benzoic acid 1-1.5 part, benzoyl peroxide 0.5-0.8 part, N, N-
Dimethylaniline 5-8 part, levelling agent 1-1.5 part, firming agent 10-12 part, reactive diluent 9-11
Part, described unsaturated polyester (UP) includes that parts by weight ratio relation is the maleic acid of 4:3:2:1
Acid anhydride, propylene glycol, polyprotic acid and diallyl phthalate；
Described technique comprises the following steps:
Step a, take the described unsaturated polyester (UP) 100 parts of weight portion, silicones 25-30 part,
Benzoic acid 1-1.5 part, benzoyl peroxide 0.5-0.8 part puts in reactor and mixes,
It is then heated to 150-160 degree Celsius, stirs 1-2 hour, obtain mixture A；
Step b, the described levelling agent 1-1.5 part adding weight portion in mixture A and activity are dilute
Release agent 9-11 part, be then heated to 180-190 degree Celsius, stir 1-2 hour, obtain mixing
Thing B；
Step c, the described firming agent 10-12 part putting into weight portion in mixture B and N,
Accelerine 5-8 part, stirs 2-3 hour, after cooling described transformator is high
Bin stability impregnating varnish.
The preparation of transformator high-storage stability impregnating varnish the most according to claim 1
Technique, it is characterised in that
Described impregnating varnish includes each component of following parts by weight: unsaturated polyester (UP) 100 parts, silicon
Resin 28 parts, 1.4 parts of benzoic acid, benzoyl peroxide 0.7 part, N, N-dimethyl benzene
Amine 7 parts, levelling agent 1.5 parts, 11 parts of firming agent, reactive diluent 10.5 parts, described
Unsaturated polyester (UP) includes that parts by weight ratio relation is the maleic anhydride of 4:3:2:1, the third two
Alcohol, polyprotic acid and diallyl phthalate；
Step a, take the described unsaturated polyester (UP) 100 parts of weight portion, silicones 28 parts, benzene first
Acid 1.4 parts, benzoyl peroxide 0.7 part is put in reactor and is mixed, and is then heated to
155-160 degree Celsius, stir 1-2 hour, obtain mixture C；
Step b, the described levelling agent 1.5 parts putting into weight portion in mixture C and activity are dilute
Release agent 10.5 parts, be then heated to 185-190 degree Celsius, stir 1-2 hour, obtain mixing
Thing D；
Step c, put into the described DMA 7 parts of weight portion to mixture D
With 11 parts of firming agent, stir 2-3 hour, after cooling the high storage of described transformator is steady
Qualitative impregnating varnish.
The preparation of transformator high-storage stability impregnating varnish the most according to claim 1
Technique, it is characterised in that
Described impregnating varnish includes each component of following parts by weight: unsaturated polyester (UP) 100 parts,
Silicones 28 parts, 1.4 parts of benzoic acid, benzoyl peroxide 0.7 part, N, N-dimethyl
Aniline 7 parts, levelling agent 1.5 parts, 11 parts of firming agent, reactive diluent 10.5 parts, institute
State unsaturated polyester (UP) and include that parts by weight ratio relation is the maleic anhydride of 4:3:2:1, third
Glycol, polyprotic acid and diallyl phthalate；
Step a, take the described unsaturated polyester (UP) 100 parts of weight portion, silicones 28 parts, benzene first
Acid 1.4 parts, benzoyl peroxide 0.7 part is put in reactor and is mixed, and is then heated to
158 degrees Celsius, stir 1-2 hour, obtain mixture E；
Step b, the described levelling agent 1.5 parts putting into weight portion to mixture E and activity dilution
Agent 10.5 parts, is then heated to 188 degrees Celsius, stirs 1-2 hour, obtains mixture F；
Step c, put into the described DMA 7 parts of weight portion to mixture F
With 11 parts of firming agent, stir 2-3 hour, after cooling the high storage of described transformator is steady
Qualitative impregnating varnish.
4. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 1
Skill, it is characterised in that described levelling agent is acrylic resin, Lauxite, poly dimethyl silicon
One or several mixing in oxygen alkane and PSI.
5. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 4
Skill, it is characterised in that described levelling agent is that acrylic resin and PSI are by weight
Amount ratio mixes for 1:1.
6. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 1
Skill, it is characterised in that described firming agent is Nitrogen-containing Phenolic Resins, in aryl oxide ester diaryl-amine one
Or both mixing.
7. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 6
Skill, it is characterised in that described firming agent be Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine by weight
Ratio mixes for 2:1.
8. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 1
Skill, it is characterised in that described reactive diluent is styrene, a kind of in phenyl glycidyl ether
Or several mixing.
9. the transformator preparation work of high-storage stability impregnating varnish as claimed in claim 8
Skill, it is characterised in that described reactive diluent be styrene and phenyl glycidyl ether by weight
Ratio mixes for 1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510062017.4A CN104592870B (en) | 2015-02-05 | 2015-02-05 | Preparation process of impregnating varnish with high storage stability for transformer |
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| CN101186779B (en) * | 2007-12-10 | 2010-05-19 | 华南理工大学 | Halogen-free anti-flaming transparent unsaturated polyester insulated dope and preparation method thereof |
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